Added a configurable Opus bitrate for audio transcription

app/MindWork AI Studio/Components/Settings/SettingsPanelTranscription.razor

@@ -12,7 +12,7 @@
         <MudJustifiedText Typo="Typo.body1" Class="mb-3">
             @T("With the support of transcription models, MindWork AI Studio can convert human speech into text. This is useful, for example, when you need to dictate text. You can choose from dedicated transcription models, but not multimodal LLMs (large language models) that can handle both speech and text. The configuration of multimodal models is done in the 'Configure providers' section.")
         </MudJustifiedText>
-        
+
         <MudTable Items="@this.SettingsManager.GetAllTranscriptionProviders()" Hover="@true" GroupBy="@GROUP_CONFIG" Class="border-dashed border rounded-lg">
             <ColGroup>
                 <col style="width: 12em;"/>
@@ -84,5 +84,9 @@
         }
 
         <LockableButton Text="@T("Add transcription provider")" IsLocked="@(() => !this.SettingsManager.ConfigurationData.App.AllowUserToAddProvider || !this.SettingsManager.ConfigurationData.App.AllowUserToAddTranscriptionProvider)" Icon="@Icons.Material.Filled.AddRoad" OnClickAsync="@this.AddTranscriptionProvider" Class="mt-3" />
+
+        <MudDivider Class="mt-6 mb-3"/>
+
+        <ConfigurationSelect OptionDescription="@T("Transcription audio quality")" SelectedValue="@(() => this.SettingsManager.ConfigurationData.App.OpusBitrate)" Data="@ConfigurationSelectDataFactory.GetTranscriptionOpusBitrateData()" SelectionUpdate="@(selectedValue => this.SettingsManager.ConfigurationData.App.OpusBitrate = selectedValue)" OptionHelp="@this.OpusBitrateHelp" IsLocked="@this.IsOpusBitrateLocked"/>
     </ExpansionPanel>
 }

app/MindWork AI Studio/Components/Settings/SettingsPanelTranscription.razor.cs

@@ -36,7 +36,11 @@ public partial class SettingsPanelTranscription : SettingsPanelProviderBase
         var modelName = provider.Model.ToString();
         return modelName.Length > MAX_LENGTH ? "[...] " + modelName[^Math.Min(MAX_LENGTH, modelName.Length)..] : modelName;
     }
-    
+
+    private string OpusBitrateHelp => T("Higher bitrates can improve transcription accuracy, especially for quiet or noisy recordings, at the cost of a larger upload to the transcription provider. 128 kbps is recommended.");
+
+    private bool IsOpusBitrateLocked() => ManagedConfiguration.TryGet(x => x.App, x => x.OpusBitrate, out var meta) && meta.IsLocked;
+
     #region Overrides of ComponentBase
 
     protected override async Task OnInitializedAsync()